body{
    min-width: 500px;
    width: 100%;
    margin: 0px;
    min-height: 200px;
}
.header{
    width: 100%;
    height: 50px;
    background-color: #f5f5f5;
    text-align: center;
    line-height: 50px;
    font-size: 20px;
    font-weight: bold;
}
.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 30px;
    background-color: #f5f5f5;
    border-top: 1px solid #e5e5e5;
    text-align: center;
    line-height: 30px;
}
.footer-item {
    display: inline-block;
    width: 100%;
    height: 100%;
}
.footer-item-title {
    font-size: 14px;
    color: #999;
}
.content{
    width: 100%;
    height: 100%;
    text-align: center;
    line-height: 100px;
    padding-bottom: 50px;
}
.content-item{
    display: inline-block;
    width: 100%;
    height: 100px;
}
.content-item-title{
    font-size: 14px;
    color: #999;
    height: 50px;
    line-height: 50px;
}
.content-item-input{
    width: 100%;
    height: 30px;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    padding: 0 10px;
}
.content-item-input:focus{
    border: 1px solid #ccc;
    outline: none;
}
.content-item-button{
    width: 100px;
    margin-left: 20px;
    height: 30px;
    background-color: #f5f5f5;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    color: #999;
    font-size: 14px;
    cursor: pointer;
}
.content-item-button:hover{
    background-color: #e5e5e5;
}
.content-item-button:active{
    background-color: #d5d5d5;
}
.content-item-input-button{
    display: flex;
    justify-content: space-around;
    margin: 0px 20px;
}
